Questions tagged [peltier]

The Peltier effect is a reversible physical process which is exploited in Peltier cooler/heater. The flow of current through this device pumps heat from one plate of the device to the other. This can be used to both heat and cool electronic components.

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185 views

Can I use a modified freezer to cool the hot side of a peltier element to reach very low tempetatures (-30°C)?

I'm quite new to this, so forgive me if I ask anything stupid, but I need some help and I hope that some of you here might be able to help me. For a school project, I'm building a cloud chamber. The ...
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2k views

What happens when a peltier fails?

I am trying to determine all possible failure cases for a heating application with a peltier. Most sources I find on the internet are looking at peltiers as a way of cooling CPUs, so I have heard ...
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248 views

grade school science experiment peltier module and led

I am doing a grade school science experiment. I am trying to light up a led light using pletier modules with only body heat. I am trying to figure out a lot of things since I have never done anything ...
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1answer
260 views

Will quickly switching polarity on a peltier damage it?

I am experimenting with different ways to heat up and cool down a peltier to a specific setpoint. Heating up the peltier to a setpoint using a PID has been relatively simple, and right now I am ...
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80 views

Peltier inquiry

With availability for high powered Peltier thermoelectric heating / cooling I'm inclined in a cooling design incorporating them. Being first time incorporating the same I'd like more understanding and ...
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559 views

Constant Voltage of a Peltier TEG Tile

So I have several TEG peltiers, and the main issue that arises is the peltier tile neutralizes in heat over time. Applying my hand's heat to one side will soon affect both sides of the tile, therefore ...
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521 views

Adding capacitors prevents car peltier cooler from making low battery light flicker, but why?

I have a Black and Decker Heater/Cooler that I want to use in my Camper as a little drink caddy for in front of my Futon while I have company over and we are playing games, and I just switched to a ...
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153 views

Copper sheet thickness to use between Peltier and CPU

I'm going to use a TEC-12726 (50mm by 50mm, 240W QMax) to cool an FX-8120 (40mm by 40mm, 125W TDP) CPU, and I want to use the full size of the TEC by putting a sheet of copper between the CPU and TEC, ...
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404 views

Go around short circuit protection

I recently bought a lithium-ion battery that has a built in protection for short circuit. I want to power a thermoelectric cooler with it. But when i connect it to the battery it seems that the ...
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955 views

Troubleshooting HIP4081

I'm driving four N-channel MOSFETS (IRFLIZ44N) with a HIP4081, and the circuit looks like the following: The MOSFETS are driving a peltier module, and the input pins of the HIP4081 are being driven ...
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546 views

Running a Peltier directly from a transistor

New to post, but I come here often. So I am working on building a small fermentation chamber and i want to control the temperature using two Peltier's. One for hot and one for cold. I'm using two to ...
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248 views

driving a Peltier with a MOSFET

I am attempting to drive a Peltier device using a single MOSFET, controlled by a microcontroller. I am working with several different peltiers and various MOSFETs, so wont provide component details ...
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157 views

How does a thermoelectric generator generates electricity? [closed]

I want to know how a thermoelectric generator generates electricity. I know that it converts 'heat flow' to electricity.But some people say it consumes heat and converts it into electricity.The rest ...
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1k views

2 nos Peltier connection… Series or parallel

I'd like to build a mini AC using two Tec1 12706 Peltier modules. If I use two of them, should they be connected in series or parallel? Can I use a 12VDC power supply that outputs 2A and takes 220VAC ...
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1k views

Directly driving 5V source MOSFET H-Bridge with 3.3V logic

I am trying to design a H-bridge circuit for my project to drive a thermoelectric cooler (TEC). Basically, I am trying to control the TEC with a voltage source driven by PWM. Now the problem is, I ...
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592 views

Powering peltier tile using 3.7V lipo battery?

Is it possible power the peltier tile to a reasonable temperature using only a 2500mAh 3.7V lipo battery and DC Boost Converter to boost the output to 12V? The peltier tile I'm using is bought here: ...
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314 views

Is it possible to drill through a peltier?

I want something like this: But I don't want to pay 30 bucks (USD) for a single peltier. Can I just drill a normal one?
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15k views

Is it worth to try making peltier based refrigerator?

I built a box from 5cm thick Styrofoam with outer dimensions 60x55x80cm. I wanted to use it as a fermentation chamber for home brew purposes. The reason why I did not choose regular (some used cheap) ...
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1answer
750 views

How to regulate 2x130W peltier modules

I built a small fermentation chamber (cooling box) based on the peltier modules. I know this is not very optimal way as peltiers are not very efficient, but I had my reasons for choosing this way. ...
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1answer
139 views

Energy Harvesting Primary VDD and Battery Backup VDD power for MCU

Currently I am in the design process of circuitry for my energy harvesting circuit. I am using the CC1110F32 MCU from TI. I am using the Development kit boards that they created for this project. The ...
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1answer
134 views

Peltier and Portable Litium Ion Battery [closed]

I am designing a portable rechargeable heat flask using peltier module at what specifications I should choose my power supply?? I am actually going for rechargeable lithium Ion battery with 12 volt ...
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3answers
9k views

Use Peltier Cooler for effective Air Cooling?

I am using 4 TEC1-12706 thermoelectric cooler on a suitcase, by cutting 4 holes to fit these through and sealed them. All of them are connected to 12V DC supply from a SMPS and each of them have ...
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565 views

How do I connect the wires on a PC Power Supply that supplies +3.3V, +5V, +12V, -12V, and +5Vsb to make 15 Volts for Peltier module?

I've selected the Corsair CS450m as the PSU. I also found a 12V DC 30A 360W Switching Power Supply on eBay for about $54 AUD (I'm not allowed to show the link), but I wouldn't know how to get it to ...
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795 views

Arduino controlled regulator circuit to control two Peltier devices,

I am needing to find an arduino controlled circuit that will control the temperature in a box enclosure utilizing peltier devices. So far, I have a SR7021 temperature sensor wired to an Arduino Nano ...
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145 views

thermoelectric generator

My question is can a thermoelectric generator(input:heat difference to output:electricity) module also work as a peltier module(Input: current to output:cooling effect)? If I buy a thermoelectric ...
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2answers
260 views

How to Detect if Motor is not Working?

sorry for my english, I am from Indonesia. I try to make a (car) relay active - switch on, if the motor/fan is working normal, so when the fan is out, not working or broken, automaticly the relay is ...
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112 views

Self charging wood-gas camping stove using thermoelectric module/modules

Is it better to string 3 teg thermoelectric generator modules in series to charge 8 NiMH batteries at a current of around 700 mA Delta T of ~80 deg. C or should I use 1 module and try a voltage ...
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562 views

Why a thermoelectric generator's efficiency increases when the thermal conductivity of thermoelectric materials decreases?

A thermoelectric generator generates electricity from the flow of heat.The heat flow rate will increase if the thermal conductivity will increase. So the power generation should increase too. So why a ...
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371 views

How can I determine the alloy in a Peltier module?

Simple question, I know I have the following Peltier module : 12711-5L31-03CL. I have it's datasheet. I'd be interested in knowing its alloy so I can know it's Seebeck coefficient and thermal ...
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636 views

Wiring 100 Peltier Plates Together

Get ready for a question about an absurd idea I'm trying to determine the feasibility of. I want to both heat and cool a flat 3mm aluminum sheet of dimensions 50x50cm (half meter squared). If cost isn'...
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2k views

Sizing of a peltier element

I want to cool some electronics with peltier elements in order to increase their potential working temperature compared to the surroundings. Unfortunately the surface where these elements are ...
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346 views

Efficient cooling system for a DNA Analysis thermal cycler

My team is doing a senior project that involves using polymerase chain reaction to analyze DNA. From what we know, most modern thermal cyclers uses the Peltier thermoelectric modules for active ...
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1answer
105 views

Is it possible to have peltier plates within a few micron thickness range?

Is it possible to make peltier plates of a thickness of a few microns . If not What device/material can be used in a thickness range of a few microns for cooling purposes ?
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108 views

Cooling a CCD cam need help with power source

Lately my brothers love for astrophotography left me to embark on this endeavor. He has a metal CCD camera and in the sport a major way to reduce image noise is to cool the camera. So I ordered some ...
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2answers
5k views

TEC 12706 not drawing more than 1.6A when powered by a 12V PC SMPS

I have recently bought TEC 12706 device from Sunrom.com; The specification says that the device can draw more than 6A current at 15.4V and internal resistance is ~2 ohms. But when I measured the ...
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2answers
4k views

Smoothing a High Current PWM

I am using a MOSFET to control the average voltage to a device by varying the duty cycle to the base as shown in the diagram below. My question is what is the best circuit to use in the "filter box" ...
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1answer
4k views

Are cheap Chinese peltier modules efficient?

I'm developing a product that cools beverages and trying to decide what peltier modules to choose. I've noticed that some companies like Laird Technologies, CUI inc and TE technology offer expensive ...
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4answers
12k views

Wiring multiple peltier units

First of all this question relates to powering Peltier units and not the physical relationship. I have two Peltier units and a 320w 12v supply similar to this the units are TEC12715. They are ...
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1answer
611 views

How to determine the value of a decoupling capacitor across a Peltier device?

I have a TEC device (Thermoelectric Cooling device/peltier device), and I have seen several datasheets recommend placing a bypass capacitor across the TEC device (i.e. parallel to the TEC, and in ...
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2answers
3k views

Flexing Peltier Plate (Physical Question)

I am doing research into Peltier plates for a project, which requires a flexible component. From what I have found, no commercially made flexing Peltier plates seem to exist. My question is, what is ...
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2k views

Peltier circuit design for TEC

I'm designing a TEC circuit with a Peltier element, LM35 as the sensor and Arduino uno as the controller. I simulated it with Proteus and to my knowledge it was working, I suppose. But when I tried to ...
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2k views

A device like a Peltier cooler which transfers heat to another surface not in direct contact with the cold side?

Back when I was a kid and first learned about Peltier coolers, I mistakenly thought they had the ability to transfer heat remotely from one surface to another via wires. I didn't realize the heat ...
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26k views

car A/C using peltier devices, is it feasable'

In a couple of forums where we are working on kit cars with VW air cooled engines and therefore little room for conventional air con compressors etc we are looking at electronic means of getting ...
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1answer
341 views

Regulator circuit design

I need to design a regulator for my thesis, but I really need help, Please! The topic: - A temperature regulator for a small fridge Some details: - the regulator has to control a peltier element ...
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3answers
6k views

6w 12v 5a peltier only drawing 1a, I am supplying more current but its only drawing 1 amp?

I just bought the peltier and its of 60 watt 12v 5a and its maximum capacity is of 90 watt power. I am using my Pc power supply which have ability to provide 12v and 15a maximum. I connect to that ...
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387 views

USB charger with power bank charged from solar panel and peltiers

I would like to charge some batteries (maybe 1 lipo?) from either a 12V solar panel (about 300mA) or 2 peltiers (also about 200-300mA) in series (about 4V, but it’s really unstable and voltage changes ...
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277 views

Can I safely place a 60w between a 50w LED and a large heat sink that can dissipate 100 watts?

Today I have learned that Peltier devices can be used to generate electricity. I have a set up with a 50 watt LED which is glued to a very large heat sink that cools it without any fans (that can ...
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1answer
844 views

PWM driven bipolar DC motor controller filtered with LC for a peltier element

I want to control peltier element's temperature with a PWM driven bipolar DC motor controller to be able to switch between heating and cooling and also control the level of it. The peltier element is ...
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1answer
169 views

Using a Thermoelectric Cooler

I have recently stumbled across thermoelectric coolers, it is my understanding that when they are powered one side will get colder and the other side will get hotter. Also that the more power supplied ...
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286 views

Convert body heat to light [closed]

What thermoelectric device would I use to power one white LED generated by the body heat of one square centimeter skin on a hand. That is, I wish to power one white LED from the heat generated by one ...